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Nov. 25, '1930. 1 LQSANES l 1978251940 APPARATUS ,ron resume NTERNAL -colusTIoN ENGINES .failed dot. 1, .1927 `Figi I i l ffy-21 .mp-umrlllll! dnll-nilllllllllill Patented Nov. 25, 1930 UNITED STATE-s PATENT-"OFFICE LnoN sAIvns, onf-BILLANCOURT, FRANCE, Assrciron To Louis RENAULT, or niLnAiicenar, ramon mmrus non lemme INTERNAL-convenait ENGINES Application med october '1, i927, semi No; 22am, and in France october, is, 192s.

My .present invention relates to improve- 4, 4 permits the auxiliary battery toremain ments in apparatus for igni internal com` loaded when the engine is stopped, while the bustionen esby means of al attery,where other battery or batteries may become disby the igmtingv of the engine is still secured charged, as for example, when such other 5 in the'event of the battery becomin disbattery or batteries are used for lighting.

f charged, owing to the negligence of a river who might have forgotten to interrupt the circuit when the engine was not running.

In the igniting apparatus accordin to the loinvention there is provided in pai-al el with a resetting device,

the main battery another auxiliary battery of any type, but preferably alkaline, connected wit the generator like the iiain batteria, but independently thereof, by-means of a double circuit-breaker, which will preventthe' discharge of one battery through the other when the motor is not running, combined with a two-way switch 1prermittingofsupplying the igniting circuit om one or other of the two atteries. v

The two-way switch preferably comprises always returning the switch to the position corresponding to the iguiting by the normal battery. VIn thisway the auxiharyalkaline battery-will always be in Vworking condition so as to ensure the igniti'ng of t e engine in the event of the main bat# tery becoming discharged.

The switch might ually well be connected with the electric starting pedal of the engine, so that during vthe starting ofthe engine, in the event of considerable drop iii the voltage of the battery, the igniting would be assured by the auxiliar'ybattery and subsequently by the main battery as. soon as the engine is started.

The invention thus consists. substantially in connecting with the igniting apparatus two batteries, one for the normal service of the vehicle .(igniting, lighting and starting), the other, called auxiliary, enabling a start to be made even in the event ofthe main battery having become completely discharged, in combination with a double circuit-breaker secuiing their independence is not running; and a two-'way switch, which is normally in position for igniting from the main battery and which may be shifted manually to connect the auxiliary battery in the when the engine The subject of my invention will be'more readily understood by referring to the accompanying drawings in which there are shown three diagrams of diferent connections of the apparatus.

t In Fig. l, 1 is the generator supplyin the two batteries 2 and 3, 2 being the aux- 'ary battery and 3 the normal battery. A double circuit-breaker 4, et provides the connection of the batteries with the generator, independently of each other, 5 is the two-way switch comprising a contact .6 yconnected with the normal battery 3y and a contact 7 connectedwith the-auxiliary battery 2; a spring 8 constantlybrings back the switch-blade on to the contact 6 corresponding to igniting by the normal battery. The current passes from the switch 5 to the coil 9 and thence to sparking plugs 12 by way of the distributor l0. Switches a and b are provided, in a circuit adapted to connect thebattery 2 with the bat tery 3, in the structure shown in Fig. 2, ,c with the batteries 3 and .3', in the structuroA shownin Fig. 3, in order to start the engine.

Switch a connects the battery 2 with the bat- -teries 2 and 3 are of the same kind and have the same capacity; each of them can supply 'current to one of the headlights 13 of the vehicle, as described in my French patent; they are coupled up at the desired time by the starting of the engine.

An intermediate position corresponding to the cessation of the lighting may be rovided between the two contacts and: of the switch. If the driver forgets to shift to this position and lets the battery 3 discharge through 6 then as soon as he notices the falling oif of voltage of the battery 3, he has only to shift over on to the contact 7 corresponding tothe battery 2, the circuit of which is open. Y 7 But in this case of two batteries, each securg A l menace 'ing half 'of the lighting, and coupled for theV A starting of the engine, it will be preferable toprovide e third auxiliary battery, the switch being vei'ile to remain on the so-celled 5 aum'liary contact only in the event of the complete discharge of the two normal batteries and by means of e key or plug inserted at the moment of starting. The interruption vol' the lighting will be obtainedA preferm ably by opening the circuit 11 by means ci the general switch board in the usual wey,

and the lighting up on starting being obtainedgas in the first case by means o the starting pedal connected with the switch 5.

15 Fig. 3 corre ending to this arrangement shows the com ination of two normal betteries 3 and 3' each supplying current to one healight and coupled for starting with an auxiliary battery 2.

2u Claims:

l. An ignition system v*for internal combustion engines comprising en electric gen-. crater, e. inein battery and en auxiliary battery included in separate circuits with scifi generator, c. double circuit breaker control- A ling said circuits, endetwo-wey switch ecapted te connect the batteries selectively with the ignition apparatus.

2. An ignition system `im internal ccni- 3c husticn engines comprising en 4electric genereter, e renin catterynn. en auxiliary bettery inclnde. in separate circuits wit scifi generator, e, tionble circuit breaker contreiiing said circuits, and e two-wey switch adapted to connect the batteries selectively with the ignition apparatus, seid switchhoringmeens to normally cause the seme to close the circuit from the mein battery te the ignition apparatus.

' ce In testimony whereof I ex m 'si .f eture.,

' LEON l i S. 

